Question

State two main consumers of electricity transmitted at low frequency Calculate the primary voltage of a transformer if the primary winding is 50 turns and the secondary winding is 150 turns with 450 volts.

Answer 1

Answer:

1) a. Customers requiring AC electric power transmission for powering remote devices which may include a subsea transmission system where power is distributed to subsea devices

b. Customers that utilize commutator-type motors

2) The primary voltage is 150 volts

Explanation:

The parameters given are;

Number of primary winding, $N_p$ = 50 turns

Number of secondary winding, $N_s$ = 150 turns

Voltage in secondary winding, $V_s$ = 450 volts

Voltage in primary winding = $V_p$

The relation between $N_p$, $N_s$, $V_s$ and $V_p$ is as follows;

$\dfrac{V_p}{V_s} = \dfrac{N_p}{N_s}$

Which gives;

$V_p = \dfrac{N_p \times V_s}{N_s}$

From which we have;

$V_p = \dfrac{50\times 450}{150} = 150 \ volts$

The primary voltage = 150 volts.

Answer 2

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